Thermographic Detection of Creep-rupture Tubes Using a CCD Camera

• Main Authors: Cheng-I Hsu, 許正宜
• Other Authors: Chuen-Ching Wang
• Format: Others
• Language: zh-TW
• Published: 2008
• Online Access: http://ndltd.ncl.edu.tw/handle/58148628057755008207

碩士 === 國立彰化師範大學 === 電機工程學系 === 96 === This study aims to use a low-cost camera to detect abnormal high-temperature areas on tubes before creep rupture occurs. Based on image gray level, the infrared energy radiated by high surface temperature can be detected, so heat distribution difference caused by tube flaws can be revealed and the temperature can also be calculated. Gray level influenced by external illumination or surface color can be corrected through image processing. Thus, through contactless full-range temperature detection, creep rupture of tubes under high temperature can be identified and the surface temperature can also be measured. Keywords: creep-rupture, charged coupled device, infrared, thermographic.